* {
    margin: 0;
    padding: 0;
}
.top {
    background-image: url("../img/banner_qtah.jpg");
    height: 808px;
    /*background-repeat: no-repeat;*/
    /*width: 100vw;*/
    background-size: 100% 100%;
}

.top .logo {
    height: 100px;
    /*border: 1px solid red;*/
    width: 1000px;
    margin: auto;
    color: white;
}

.floatLeft {
    float: left;
}

.floatRight {
    float: right;
}

.top .logo > div:nth-child(1) {
    height: 100px;
    width: 120px;
}

.top .logo > div:nth-child(1) img {
    height: 100%;
    width: 100%;
}

.top .logo > div:nth-child(2) > div:first-child {
    margin-top: 35px;
}

.top .logo > div:nth-child(2) > div:last-child {
    /*background-color: red;*/
    line-height: 100px;
}

/*.top .logo > div:first-child {*/
/*    float: left;*/
/*}*/

/*.top .logo > div:last-child {*/
/*    float: right;*/
/*}*/
/*-------------------导航----------------------------*/
.nav {
    height: 50px;
    background-color: #e69137;
}

/*.nav >div{*/
/*    display: flex;*/
/*    justify-content: flex-start;*/
/*    align-items: center;*/

/*}*/
.nav > div div {
    float: left;
    /*margin: 20px;*/
    /*margin: x; 一个参数   四周
    二个参数  margin: x y; 上下  左右
    三个参数margin: x y z;  上  左右  下
    四个参数margin: x y a b; 上右下左
    */
    padding: 0 20px;
    line-height: 50px;
    color: white;
}

.nav > div div:hover {
    background-color: cadetblue;
}

.nav > div:first-child {
    width: 1000px;
    height: 50px;
    /*border: 1px solid red;*/
    margin: auto;
}

/*.nav ol{*/
/*    list-style: none;*/
/*    width: 1000px;*/
/*    height: 50px;*/
/*    margin: auto;*/
/*}*/
/*.nav ol li{*/
/*    float: left;*/
/*    padding: 0 20px;*/
/*    line-height: 50px;*/
/*    color: white;*/
/*}*/
/*----------------广告---------------*/
.ad {
    width: 1000px;
    height: 500px;
    margin: auto;
    /*border: 1px solid red;*/
    color: white;
}

.ad > div:first-child {
    font-size: 50px;
    margin: 50px 0 20px;
}

/*.ad p{*/
/*    margin: 0;*/
/*}*/
.ad > div:last-child {
    font-size: 35px;
    color: #e69137;
}

/*even 偶数  odd奇数*/
.ad > div:last-child > div:first-child span:nth-child(odd) {
    color: white;
    font-size: 25px;
}

.ad > div:last-child > div:last-child {
    text-indent: 1.4em;
}